WikiBugs/RedirectFromNonExistentPage

E.g.:

https://www.usemod.org/cgi-bin/wiki.pl?action=browse&id=Functions&oldid=Function

it returns:

(redirected from Function)
Functions

but if I insert from url a variation on oldid

https://www.usemod.org/cgi-bin/wiki.pl?action=browse&id=Functions&oldid=Test

it returns the same target:

(redirected from Test)
Functions

--JuanmaMP